JPS6338931Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is equipped with a sliding type spray ring that performs diffusion spray/reaching spray at the tip of the spray ring of a power sprayer, and the sliding operation of the spray ring is performed by the operator at hand. It was designed to be operated remotely.

A power sprayer is a machine that sprays chemical liquid etc. on an air stream, and the blower device that generates the air stream is 6 to 10
A centrifugal blower with blades is housed in a whirlpool-type blower housing, sucks in air from one side, and sprays chemical solutions with airflow (wind) in a fixed direction.The end of the blower housing has a discharge port. It is equipped with a cylindrical injection ring.

Depending on the method of spraying chemical solutions, there are two types of spray rings: one for diffusion and one for arrival. Conventionally, switching between diffusion and arrival was possible by attaching and removing the two diffusion and arrival rings, respectively. There it was. However, attaching and removing the diffusion jet ring and reaching jet ring during work not only takes time, but also may cause the chemicals attached to the tip of the jet ring to get on your hands. In addition, it was not uncommon for the removed jet ring to be misplaced and lost.

Therefore, in order to eliminate the above-mentioned drawbacks, the present invention is a power sprayer that sucks air from one side of the blower housing and sprays a chemical liquid, etc. from the tip of the injection tube with airflow in a fixed direction. By installing a sliding jet ring that performs diffusion spray and destination spray, and configuring the sliding jet ring to be remotely controlled by a control lever provided near the hand of the jet ring,
Conventionally, a diffusion jet ring and a reaching jet ring were prepared and the work of replacing these jet rings was replaced with a single jet ring, and the sliding of this jet ring can be easily controlled using a hand-held operating lever. The purpose is to make it possible.

The purpose of the present invention is as described above, and the structure of the present invention will now be explained based on the embodiment shown in the attached drawings.

As shown in Fig. 1, the power sprayer A has a structure that allows an operator to carry it on his or her back, and a chemical tank 2 is located at the upper part of the back of a backpack frame 1 that is L-shaped in side view. A spiral blower housing 3 serving as an air blower is attached to the lower part of the air blower 2. A centrifugal blower having 6 to 10 blades is housed inside the blower case 3, and by rotating the centrifugal blower by driving an engine 4 mounted on the rear side of the blower case 3, one side of the blower case 3 is installed. It has a structure that generates airflow (wind) from the inside. Therefore, along with the airflow generated within the blower housing 3, the chemical solution is sprayed from the tip of the spray ring 5 attached to the end of the blower housing 3.

In other words, when spraying a chemical solution, the blower housing 3
The chemical liquid flows into the chemical liquid tank 2 through the conduit that runs between the inside and the inside of the chemical liquid tank 2, and because the pressure inside the chemical liquid tank 2 becomes high, it flows into the chemical liquid pipe 6 that passes between the chemical liquid tank 2 and the inside of the tip of the jet ring 5. The chemical solution flows in and is sprayed from inside the tip of the spray ring 5, which is the tip of the pipe 6, to the outside along with the airflow.

In the power sprayer A having such a structure, the chemical liquid or the like to be sprayed can be diffused or sprayed by changing the shape of the tip opening of the spray ring 5.

That is, in the past, as shown in FIGS. 2 and 3, the diffusion jet ring 7 was attached to the tip of the jet ring 5, and as shown in FIGS. A spray ring 8 was attached and the spray rings 7 and 8 were exchanged or slid back and forth to produce a diffused spray or a destination spray.

However, with this method, it was necessary to replace and install the diffusion nozzle ring 7 when performing diffusion spraying, and the arrival nozzle ring 8 when performing destination spraying. Since this replacement work was done by hand, the chemical solution got on the hands and it was necessary to wash the hands immediately. Furthermore, if the injection ring 7 or 8 was removed in a field, etc., it would be difficult to find a place to put it, and the injection ring 7 or 8 would be lost.

In contrast, the present invention is equipped with a switchable injection ring 9 at the tip base 11 of the injection ring, as shown in FIGS. 6 and 7. This switching type injection ring 9 has a longer cylindrical body than a conventional injection ring, has a wider tip diffusion portion 9a, and is mounted so as to slide on the tip of the injection ring 5. In addition, the injection ring 9 is not slid directly by hand, but an operating lever 10 is placed on the injection ring 5 at hand so that the operator can operate it at hand.
The lever 10 is connected to the sliding jet ring 9, and the jet ring 9 is slid by operating the lever 10.

As a result, if the lever 10 is pushed forward, the injection ring 9 will protrude forward, and the distance from the front end 6a of the chemical liquid pipe 6 to the distal end diffusion part 9a of the injection ring 9 will become longer, so that the ejected chemical will be transferred to the injection ring. It passes through the cylindrical part at the hand of No. 9 and is sprayed far forward.
Then, if you pull the length of the injection ring 9 toward you using the operating lever 10 at hand, the gap between the front end 6a of the chemical liquid pipe 6 and the tip diffusion part 9a of the injection ring 9 will disappear, and the chemical liquid will flow through the tip diffusion part 9a. It is diffused and sprayed. By freely adjusting the length of the injection ring 9 in this way, the spray distance, spray width, etc. can be adjusted steplessly.

Further, as shown in FIGS. 8 and 9, the length of the tip of the injection ring 5 is increased to make the tip portion 5a have a wider diameter, and the cylinder 12 is slidably mounted inside the injection ring 5. It is also possible to do so. That is, operation lever 1
When the right cylindrical body 12 is slid forward by the operation in step 0, the distance from the front end 6a of the chemical liquid pipe 6 to the distal end diffusion portion 5a of the jet ring 5 becomes longer, so that the discharged chemical liquid moves farther forward. It is sprayed. Moreover, when the operation lever 10 is slid in the opposite direction, the cylinder 1
2 moves rearward than the tip diffusion part 5a of the injection ring 5, so the diffusion part 5a is located just before the front end 6a of the chemical liquid pipe 6, and the chemical liquid is diffused and sprayed. In this structure as well, the cylindrical body 12
The sliding movement is performed by the operating lever 10, and the sliding cylinder 12 and the operating lever 10 are connected by a wire 14.

As described above, the present invention is a power sprayer that sucks air from one side of the blower housing and sprays a chemical liquid, etc. from the tip of the spray tube with airflow in a fixed direction, and performs diffusion spray/reaching spray at the tip of the spray ring. By installing a sliding jet ring and configuring the sliding jet ring to be controlled remotely using a control lever installed near the hand of the jet ring, it is possible to differentiate between the conventional diffusion jet ring and the reaching jet ring. It is possible to achieve the same effect with one injection ring instead of the two injection rings used in the previous example, and by remotely sliding the injection ring by operating the operating lever at hand, it can be easily and manually operated. Diffusion and arrival can be changed without contaminating the air, and because the structure is simple, there are fewer failures, and manufacturing costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view of the power sprayer being carried on the back during spraying work. FIGS. 2 and 3 are side sectional views of the tip of the injection ring equipped with a conventional diffusion injection ring. FIGS. 4 and 5 are side sectional views of the tip of the injection ring equipped with a conventional reaching injection ring. 6 and 7 are side cross-sectional views of the tip of the injection ring and the operating lever portion equipped with the switching type injection ring of the present invention. FIGS. 8 and 9 are side sectional views of the tip of the injection ring and the operating lever part equipped with a switching injection ring according to another embodiment of the present invention. A... Power sprayer, 3... Blower housing, 5... Jet ring, 9... Sliding jet ring, 10... Operation lever.

Claims (1)

[Scope of utility model registration request] In the power sprayer A, which sucks air from one side of the blower housing 3 and sprays a chemical solution, etc. from the tip of the spray tube 5 with airflow in a fixed direction, a sliding spray performs diffusion spray/reaching spray at the tip of the spray ring 5. Attach ring 9,
Furthermore, the switching type injection ring structure for a power sprayer is characterized in that the sliding injection ring 9 is slid by an operating lever 10 provided near the hand of the injection ring 5.